How to Choose Natural Stone Jewelry | Finding the Piece That Fits You
PREMIUM GEMSTONE — Natural Stones for Everyday Fortune
Opal · Moonstone · Labradorite · Kyanite · Ametrine · Aquamarine · Sapphire · Blue Topaz · Morganite
PREMIUM GEMSTONE is SMUK's premium jewellery collection, created so the beauty of natural stones sourced from around the world can be enjoyed as part of everyday life. Not only for special occasions, but as pieces that quietly accompany your daily style — bringing the individuality and brilliance of natural stones closer to you. Each stone is chosen one by one, with care given to the balance of colour, clarity, brilliance and natural variation.
Our Commitment
Silver 925 with Rhodium · Four-Prong Setting
Every piece in this collection is crafted in Sterling Silver 925 finished with rhodium plating. Resistant to tarnish, it keeps a clean, lasting shine — and gently frames the brilliance of each stone.
Each natural stone is hand-selected for colour, clarity and the beauty of its cut. The four-prong setting lifts the stone as if holding it up to the light, drawing out its presence and dimension.
Not a size that demands attention,
but a presence that quietly expands.
Opal
The play-of-colour that shifts with every angle of light is opal's own signature. We pair Ethiopian, unheated and untreated natural opal with Italian-made Silver 925 and rhodium. Choose from large statement stones to everyday sizes across necklaces and earrings.
Birthstone October
Treatment Unheated · Untreated
Meaning Creativity · Hope · Inner light
Moonstone
A blue-white glow floats within a translucent stone — the phenomenon known as adularescence (schiller). We pair natural Indian moonstone with Italian-made Silver 925 and rhodium. Choose from four necklace cuts: emerald, oval, heart and round.
Birthstone June
Zodiac Cancer (6/22–7/22) · Gemini (5/21–6/21)
Meaning New beginnings · Intuition · Renewal
Emerald
Moonstone Necklace
approx. 8x6mm / 1.7ct — SN260306
The largest cut in the series
Oval
Moonstone Necklace
approx. 8x6mm / 1.3ct — SN260308
An elegant, elongated impression
Round
Moonstone Necklace
approx. 5mm / 0.8ct — SN260304
Like a full moon, for everyday wear
Moonstone
Round Stud Earrings
Sterling Silver 925 · Rhodium
Prongs set behind the stone, so it stands out
Moonstone
Necklace & Earrings Set
Sterling Silver 925 · Rhodium
A matching necklace-and-earrings set
Labradorite
Tilt the stone and flashes of blue and violet appear — the phenomenon of labradorescence. We pair natural Indian labradorite with Silver 925 and rhodium. Choose from four styles, from simple classics to designs combined with other natural stones.
Zodiac Guardian stone of Cancer (6/22–7/22)
Planet Moon · Goddess Artemis
Meaning Intuition · Transformation · Protection
Oval
Labradorite Necklace
approx. 8x6mm / 1.4ct — SN260601
A refined stone for grown-up elegance
Labradorite
x Aquamarine Necklace
With March birthstone aquamarine — SN260604
Two blues meeting together
Labradorite x Tanzanite
x White Topaz Necklace
December birthstone & 24th anniversary stone — SN260603
Three stones weaving a night gradient
Round
Labradorite Earrings
Sterling Silver 925 · Rhodium — SE260601
Stud type · approx. 5mm
Oval
Labradorite Earrings
Sterling Silver 925 · Rhodium — SE260602
Stud type · approx. 8x6mm
Oval
Necklace & Earrings Set
Sterling Silver 925 · Rhodium — ST260601
Elegant pair jewellery for grown-ups
Kyanite
A deep, clear blue reminiscent of sapphire. We pair natural Nepalese kyanite with Italian-made Silver 925 and rhodium. All stones are unheated, delivering the natural blue just as it is. Kyanite is a rare stone whose hardness even changes with the direction of its crystal.
Origin Nepal (Himalayas)
Treatment Unheated
Meaning Independence · Adaptability · Purity
Ametrine
A bicolour quartz where purple (amethyst) and yellow (citrine) melt into one crystal. We pair natural, unheated ametrine from the Anahí mine in Bolivia with Italian-made Silver 925 and rhodium. This time we chose larger stones so the colour gradient can be enjoyed to the full.
Birthstone February · November
Origin Bolivia (Anahí mine) · Unheated
Meaning Harmony · Stability
Aquamarine
A clear, watery blue like seawater. Aquamarine belongs to the beryl family, the same as emerald and morganite. We pair natural aquamarine with Italian-made Silver 925 and rhodium. Choose from four necklace cuts.
Birthstone March
Family Beryl
Meaning Happiness · Composure · Wisdom
Blue Sapphire
A deep, dignified blue. Sapphire is a variety of corundum, second in hardness only to diamond. We pair natural, unheated blue sapphire from Africa with Italian-made Silver 925 and rhodium.
Birthstone September
Origin Africa · Unheated · Mohs 9
Meaning Compassion · Sincerity · Nobility
London Blue Topaz
A deep, clear grown-up blue. With its high hardness, it suits everyday wear well. We pair natural London blue topaz from Brazil with Italian-made Silver 925 and rhodium. Choose from five necklace cuts and two earring cuts.
Birthstone November
Origin Brazil · Mohs 8
Meaning Intellect · Sincerity · Success
Morganite
A soft, pink light. Morganite belongs to the beryl family, the same as emerald and aquamarine. We pair unheated Brazilian morganite with Italian-made Silver 925 and rhodium. Fine unheated morganite reaches the market in small quantities and its price tends to rise.
Origin Brazil · Unheated
Family Beryl
Meaning Love · Tenderness
Hook Earrings
Swaying lightly at the ear, the hook style lets you enjoy the natural expression of each stone. Catching the light with every movement, the colour and clarity of the stone come naturally to life.
Amethyst
February birthstone · Aquarius / Pisces
For steadying yourself and finding your pace
Stud Earrings (Emerald Cut)
The stud style, with no sway, gives a clean impression and is easy to wear every day. A faceted cut on the rectangular form draws out dimension and depth when it catches the light.
Amethyst
(Faceted / Rectangle)
February birthstone
Deep violet with a delicate brilliance
Blue Topaz
(Faceted / Rectangle)
November birthstone
Clear blue in harmony with a poised form
Rectangle Stud Earrings [Size Up]
The [Size Up] series is finished with a slightly bolder presence than the standard size. Even as stud earrings, they let you enjoy the expression of the natural stone and the beauty of its cut more clearly.
![Ametrine [size up] rectangle Silver 925 stud earrings, rhodium plated, nickel-free SMUK](https://cdn.shopify.com/s/files/1/0599/5610/1315/files/ametrine-silver-stud-earring-28.webp?v=1766060261)
![Blue topaz [size up] rectangle Silver 925 stud earrings, rhodium plated, nickel-free SMUK](https://cdn.shopify.com/s/files/1/0599/5610/1315/files/blue-topaz-silver-stud-earrings-1-cm-16.webp?v=1766060292)
![Lavender quartz [size up] rectangle Silver 925 stud earrings, rhodium plated, nickel-free SMUK](https://cdn.shopify.com/s/files/1/0599/5610/1315/files/lavender-quartz-silver-stud-earrings-10.webp?v=1766060515)
About Pre-Order Items
Some items in this collection are offered as pre-order products. They will be shipped in order once stock arrives and inspection is complete.
※ If you order pre-order and in-stock items together, everything will be shipped together once all items are ready.
※ Pre-order items cannot be cancelled, changed or returned after the order is confirmed. Please review the details carefully before ordering.
※ As all natural stones are products of nature, colour, clarity and patterning vary from one piece to another. Please understand this as the individual expression of each stone.
Not to change something, but as jewellery to help you value who you are now, one day at a time.
May PREMIUM GEMSTONE bring the brilliance of natural stones into your everyday life.
- Kyanite Guide｜The Deep Blue of the Himalayas
- Opal Guide｜Rainbow Light and the Sea
- Labradorite Guide｜The Stone that Holds an Aurora
- Moonstone Guide｜Wearing the Light of the Moon
- Aquamarine Guide｜The Clear Water Blue of Spring & Summer
- Pearl Collection｜An Elegant, Flattering Glow
- Lapis Lazuli Guide｜A Night Sky in Stone
- Moissanite Guide｜Diamond-like Brilliance & GRA Report
- Is That Stone Real?｜How to Tell & the Truth About "Treatment"
- Natural Stone Jewellery GUIDE｜Finding the One That's Right for You
- A 3,000 yen vs 8,000 yen Earring — Where's the Difference?
- Choosing Silver 925 — Jewellery to Live With Nature
